Abscisic acid promotes flowering in short-day plants and inhibits it in long-day plants. Which of the following is antagonistic to abscisic acid in terms of flowering?
Correct answer: A. Gibberellins
- A. Gibberellins
- B. Cytokinins
- C. Auxins
- D. Ethene
Explanation
The correct answer is gibberellins. Gibberellins are plant hormones that promote flowering in both short-day and long-day plants. Gibberellins are involved in a variety of processes, including stem elongation, leaf expansion, and flowering. They work by antagonizing the effects of abscisic acid, which inhibits flowering.
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Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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